dendrite

1. In cell biology, a dendrite is one of usually numerous, short, highly branched processes of a neuron,
which makes contact with other neurons at synapses and conveys nerve impulses from
them into the cell body.

2. In physical chemistry, a dendrite is a branched tree-like crystal form,
common in ice (especially frost) and certain
minerals, and chiefly important in metals,
which often consist of dendrites embedded in a matrix of the same or
(for alloys) different composition.